Tuesday:

A fine day with sunny spells after a frosty start. Cloud cover increasing from the east through the afternoon with, perhaps, one or two light showers. Milder. Maximum Temperature 9C.

Outlook for Wednesday to Friday:

Wednesday, a frosty start then dry, but a risk of rain in north later. Thursday and Friday will also be mild but more unsettled with spells of wind and rain.

Day 6 to 15

The weekend will be unsettled with sunshine and showers for most, although some longer spells of rain are possible, with perhaps some hill snow in the north. It will be windy, with coastal gales at first. Temperatures will be slightly below normal and locally rather cold, with a risk of overnight frosts, chiefly in the north. During the final week of March the UK's weather is likely to stay changeable, with showers and rain at times, interspersed by drier and brighter interludes. There remains some uncertainty in the forecast for the Easter Weekend, but we are likely to see slow moving weather systems across the UK, with wetter weather more probable in the south. and with drier, colder conditions in the north albeit with a risk of snow at times.

Day 16 to 30

There is significant uncertainty in the forecast detail during this period, but it does look as though slow moving weather systems will affect the UK. There will most probably be a balance between Atlantic frontal systems affecting the south and west at times, with perhaps colder and perhaps drier conditions in the north. However, further snow is possible at times, more especially in the colder north. It will be windy in places with below average temperatures; some overnight frosts are likely during early April. Towards the middle of the month confidence becomes very low, but some warmer days are expected and it may become drier generally.

Met Office : WL : 2018-03-19T14:59:37

Issued: 1800 on 2018-03-19 for Brecon Beacons

Today

Mainly dry with sunny spells and lighter winds.

Summary

Clear spells overnight and mainly dry, although a few snow flurries are likely in the east. Then a mainly dry day with some good spells of sunshine developing, especially in the west during the afternoon. Remaining dry with clear spells through the evening.

Chance of Cloud free tops

Little chance through the early hours, especially in the east with periods or persistent cloud above 450m. The cloud lifts and breaks through the morning with chances improving to around 90% by early afternoon with little or no cloud expected below the summits.

Ground conditions

Visibility

Very poor in cloud and perhaps falling to several kilometres in snow flurries overnight, otherwise becoming very good with good views of surrounding hills although distant hills will appear rather hazy.

Gales: Low likelihood

Severe Chill Effect: Medium likelihood

Poor Visibility: Medium likelihood

Strong Sunlight: Medium likelihood

06

07

08

09

10

11

12

13

14

15

16

17

18

19

20

21

22

23

Weather

Partly cloudy (night)

Cloudy

Partly cloudy (night)

Sunny intervals

Sunny intervals

Sunny intervals

Rain

10%

20%

20%

10%

<05%

<05%

Temp (tops)

-3

-3

-2

-1

1

2

Wind (tops)

22

21

16

16

17

14

Freezing Level

100m

100m

300m

300m

500m

600m

Day 1

Continuing dry overnight with clear spells and some good spells of sunshine through the morning. However cloud increases through the afternoon but it is expected to remain dry.

Ice

Below 300m gradually rising above the summits

Visibility

Very good through much of the day, becoming very poor in cloud later.

Wind

Westerly at 10-15 mph through much of the morning increasing 20-25mph during the afternoon with gusts around 40mph over summits.

Temp

Around minus 1 Celsius rising to plus 3 Celsius (at high level)

Day 2

Bright start but generally rather cloudy with outbreaks of rain and summit snow spreading east through the late afternoon and evening. Strong westerly then southwesterly winds. Freezing level just above the summits.

Day 3

Cloud and outbreaks of rain and summit snow clearing east through the morning then a bright afternoon with sunny spells and the odd wintry shower. Occasionally strong southwesterly winds. Freezing level just above the summits.